AttributeError: 'Namespace' object has no attribute 'run_requires'

[LouisStAmour]

• I have searched the issue tracker and believe that this is not a duplicate.

Make sure you run commands with -v flag before pasting the output.

Steps to reproduce

Same as #293 but I'll try to write up a test case to reproduce this more easily.

Actual behavior

With 1.4.1 it now says:

uhid_freebsd.cpp:15:10: fatal error: 'dev/usb/usb_ioctl.h' file not found
#include <dev/usb/usb_ioctl.h>
         ^~~~~~~~~~~~~~~~~~~~~
1 error generated.
error: command '/usr/bin/clang' failed with exit code 1
Failed to build package, try parsing project files.
Traceback (most recent call last):
  File "/usr/local/bin/pdm", line 8, in <module>
    sys.exit(main())
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/core.py", line 76, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/core.py", line 131, in main
    raise err.with_traceback(traceback)
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/core.py", line 127, in main
    f(options.project, options)
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/cli/commands/install.py", line 33, in handle
    actions.do_lock(project, strategy="all")
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/cli/actions.py", line 70, in do_lock
    mapping, dependencies, summaries = resolve(
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/resolver/core.py", line 152, in resolve
    result = resolver.resolve(requirements, max_rounds)
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/resolvelib/resolvers.py", line 454, in resolve
    state = resolution.resolve(requirements, max_rounds=max_rounds)
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/resolvelib/resolvers.py", line 348, in resolve
    failure_causes = self._attempt_to_pin_criterion(name, criterion)
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/resolvelib/resolvers.py", line 208, in _attempt_to_pin_criterion
    criteria = self._get_criteria_to_update(candidate)
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/resolvelib/resolvers.py", line 199, in _get_criteria_to_update
    for r in self._p.get_dependencies(candidate=candidate):
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/resolver/providers.py", line 77, in get_dependencies
    deps, requires_python, summary = self.repository.get_dependencies(candidate)
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/models/repositories.py", line 64, in get_dependencies
    requirements, requires_python, summary = getter(candidate)
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/models/repositories.py", line 30, in wrapper
    result = func(self, candidate)
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/models/repositories.py", line 141, in _get_dependencies_from_metadata
    deps = candidate.get_dependencies_from_metadata()
  File "/usr/local/Cellar/pdm/1.4.1/libexec/lib/python3.9/site-packages/pdm/models/candidates.py", line 214, in get_dependencies_from_metadata
    return filter_requirements_with_extras(metadata.run_requires, extras)
AttributeError: 'Namespace' object has no attribute 'run_requires'

Expected behavior

It installs fido2==0.9.1 on non-FreeBSD systems.

Environment Information

# Paste the output of `pdm info && pdm info --env` below:
PDM version:        1.4.1                                                   
Python Interpreter: .../.venv/bin/python (3.9.2)
Project Root:      ...                         
{
  "implementation_name": "cpython",
  "implementation_version": "3.9.2",
  "os_name": "posix",
  "platform_machine": "x86_64",
  "platform_release": "20.4.0",
  "platform_system": "Darwin",
  "platform_version": "Darwin Kernel Version 20.4.0: ...",
  "python_full_version": "3.9.2",
  "platform_python_implementaiton": "CPython",
  "python_version": "3.9",
  "sys_platform": "darwin"
}